While aging is inevitable, scientists are finding out that certain changes in brain function may not be.

尽管衰老是不可避免的，科学家们却发现大脑功能的某些变化或许并非不可避免。

youdao

No one knew, but it was certain and inevitable.

没有人知道，但那是必然的，无可避免的。

youdao

We are certain to enter into relationship with people, as humans are social beings (organisms/animals/creatures??) with the inevitable fate of connecting with others.

你一定会与某些人达成关系，人类是社会性的动物，与他人必有关系是你无法回避的命运。

youdao

The bleeding problem, the doctors agreed, may be an inevitable result of treating certain kinds of lung tumors.

FORBES: Assessing Avastin's Risk

Tax reform promises to improve the opportunities of all while sponsoring less tax evasion, less distortion of investment priorities and less politically corrupting pursuit of loopholes, all of which are the certain and inevitable corollary of high tax rates enacted to salve inequality neuralgia.

WSJ: Jenkins: The Inequality Obsession

But a certain amount of abstruseness is inevitable, given the subject matter.

ECONOMIST: The question of existence